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3 results on '"Oshaughnessy, C."'

1. The Majorana Demonstrator Radioassay Program

Author

Abgrall, N., Arnquist, I. J., Avignone III, F. T., Back, H. O., Barabash, A. S., Bertrand, F. E., Boswell, M., Bradley, A. W., Brudanin, V., Busch, M., Buuck, M., Byram, D., Caldwell, A. S., Chan, Y-D., Christofferson, C. D., Chu, P. -H., Cuesta, C., Detwiler, J. A., Dunmore, J. A., Efremenko, Yu., Ejiri, H., Elliott, S. R., Finnerty, P., Galindo-Uribarri, A., Gehman, V. M., Gilliss, T., Giovanetti, G. K., Goett, J., Green, M. P., Gruszko, J., Guinn, I. S., Guiseppe, V. E., Henning, R., Hoppe, E. W., Howard, S., Howe, M. A., Jasinski, B. R., Johnson, R. A., Keeter, K. J., Kidd, M. F., Kochetoi, O., Konovalov, S. I., Kouzes, R. T., LaFerriere, B. D., Leon, J., Loach, J. C., MacMullin, J., MacMullin, S., Martin, R. D., Massarczyk, R., Meijer, S., Mertens, S., Miller, M. L., Orrell, J. L., OShaughnessy, C., Overman, N. R., Poon, A. W. P., Pushkin, K., Radford, D. C., Rager, J., Rielage, K., Robertson, R. G. H., Romero-Romero, E., Ronquest, M. C., Schubert, A. G., Shanks, B., Shirchenko, M., Snavely, K. J., Snyder, N., Steele, D., Suriano, A. M., Tedeschi, D., Trimble, J. E., Varner, R. L., Vasilyev, S., Vetter, K., Vorren, K., White, B. R., Wilkerson, J. F., Wiseman, C., Xu, W., Yakushev, E., Yu, C. -H., Yumatov, V., and Zhitnikov, I.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, Nuclear Experiment
Abstract

The MAJORANA collaboration is constructing the MAJORANA DEMONSTATOR at the Sanford Underground Research Facility at the Homestake gold mine, in Lead, SD. The apparatus will use Ge detectors, enriched in isotope \nuc{76}{Ge}, to demonstrate the feasibility of a large-scale Ge detector experiment to search for neutrinoless double beta decay. The long half-life of this postulated process requires that the apparatus be extremely low in radioactive isotopes whose decays may produce backgrounds to the search. The radioassay program conducted by the collaboration to ensure that the materials comprising the apparatus are sufficiently pure is described. The resulting measurements of the radioactive-isotope contamination for a number of materials studied for use in the detector are reported., Comment: to be submitted to NIM

Published
2016
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2. The MAJORANA DEMONSTRATOR: A Search for Neutrinoless Double-beta Decay of Germanium-76

Author

MAJORANA Collaboration, Elliott, S. R., Abgrall, N., Aguayo, E., Avignone III, F. T., Barabash, A. S., Bertrand, F. E., Boswell, M., Brudanin, V., Busch, M., Caldwell, A. S., Chan, Y-D., Christofferson, C. D., Combs, D. C., Detwiler, J. A., Doe, P. J., Efremenko, Yu., Egorov, V., Ejiri, H., Esterline, J., Fast, J. E., Finnerty, P., Fraenkleo, F. M., Galindo-Uribarri, A., Giovanetti, G. K., Goett, J., Green, M. P., Gruszko, J., Guiseppe, V. E., Gusev, K., Hallin, A. L., Hazama, R., Hegai, A., Henning, R., Hoppe, E. W., Howard, S., Howe, M. A., Keeter, K. J., Kidd, M. F., Kochetov, O., Konovalov, S. I., Kouzes, R. T., LaFerriere, B. D., Leon, J., Leviner, L. E., Loach, J. C., MacMullin, S., Martin, R. D., Mertens, S., Mizouni, L., Nomachi, M., Orrell, J. L., OShaughnessy, C., Overman, N. R., Phillips II, D. G., Poon, A. W. P., Pushkin, K., Radford, D. C., Rielage, K., Robertson, R. G. H., Ronquest, M. C., Schubert, A. G., Shanks, B., Shima, T., Shirchenko, M., Snavely, K. J., Snyder, N., Soin, A., Strain, J., Suriano, A. M., Timkin, V., Tornow, W., Varner, R. L., Vasilyev, S., Vetter, K., Vorren, K., White, B. R., Wilkerson, J. F., Xu, W., Yakushev, E., Young, A. R., Yu, C. -H., and Yumatov, V.

Subjects
Physics - Instrumentation and Detectors, High Energy Physics - Experiment, Nuclear Experiment
Abstract

The {\sc Majorana} collaboration is searching for neutrinoless double beta decay using $^{76}$Ge, which has been shown to have a number of advantages in terms of sensitivities and backgrounds. The observation of neutrinoless double-beta decay would show that lepton number is violated and that neutrinos are Majorana particles and would simultaneously provide information on neutrino mass. Attaining sensitivities for neutrino masses in the inverted hierarchy region, $15 - 50$ meV, will require large, tonne-scale detectors with extremely low backgrounds, at the level of $\sim$1 count/t-y or lower in the region of the signal. The {\sc Majorana} collaboration, with funding support from DOE Office of Nuclear Physics and NSF Particle Astrophysics, is constructing the {\sc Demonstrator}, an array consisting of 40 kg of p-type point-contact high-purity germanium (HPGe) detectors, of which $\sim$30 kg will be enriched to 87% in $^{76}$Ge. The {\sc Demonstrator} is being constructed in a clean room laboratory facility at the 4850' level (4300 m.w.e.) of the Sanford Underground Research Facility (SURF) in Lead, SD. It utilizes a compact graded shield approach with the inner portion consisting of ultra-clean Cu that is being electroformed and machined underground. The primary aim of the {\sc Demonstrator} is to show the feasibility of a future tonne-scale measurement in terms of backgrounds and scalability., Comment: Proceedings for the MEDEX 2013 Conference

Published
2013

3. The majorana demonstrator search for neutrinoless double beta decay

Author

Cuesta, C., Buuck, M., Detwiler, J. A., Gruszko, J., Guinn, I. S., Leon, J., Robertson, R. G. H., Abgrall, N., Bradley, A. W., Chan, Y. -D, Mertens, S., Poon, A. W. P., Vetter, K., Arnquist, I. J., Hoppe, E. W., Kouzes, R. T., Orrell, J. L., Avignone, F. T., Barabash, A. S., Konovalov, S. I., Yumatov, V., Bertrand, F. E., Galindo-Uribarri, A., Radford, D. C., Varner, R. L., Yu, C. -H, Brudanin, V., Shirchenko, M., Vasilyev, S., Yakushev, E., Zhitnikov, I., Busch, M., Caldwell, T. S., Gilliss, T., Henning, R., Howe, M. A., Macmullin, J., Meijer, S. J., Oshaughnessy, C., Rager, J., Shanks, B., Trimble, J. E., Vorren, K., Xu, W., Christofferson, C. D., Dunagan, C., Suriano, A. M., Chu, P. -H, Elliott, S. R., Massarczyk, R., Rielage, K., White, B. R., Efremenko, Yu, Lopez, A. M., Ejiri, H., Fullmer, A., Giovanetti, G. K., Green, M. P., Guiseppe, V. E., Tedeschi, D., Wiseman, C., Jasinski, B. R., Keeter, K. J., Kidd, M. F., Martin, R. D., Elisa Romero-Romero, and Wilkerson, J. F.

Subjects
Physics - Instrumentation and Detectors, FOS: Physical sciences, Instrumentation and Detectors (physics.ins-det), Nuclear Experiment (nucl-ex), Nuclear Experiment
Abstract

The MAJORANA Collaboration is constructing the MAJORANA DEMONSTRATOR, an ultra-low background, modular, HPGe detector array with a mass of 44.8-kg (29.7 kg enriched >88% in Ge-76) to search for neutrinoless double beta decay in Ge-76. The next generation of tonnescale Ge-based neutrinoless double beta decay searches will probe the neutrino mass scale in the inverted-hierarchy region. The MAJORANA DEMONSTRATOR is envisioned to demonstrate a path forward to achieve a background rate at or below 1 count/tonne/year in the 4 keV region of interest around the Q-value of 2039 keV. The MAJORANA DEMONSTRATOR follows a modular implementation to be easily scalable to the next generation experiment. First data taken with the DEMONSTRATOR are introduced here., 10 pages, 4 figures, Proceedings of the XIIIth International Conference on Heavy Quarks and Leptons

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